Ph Testing

pH Meter for Water 4 in 1 pH EC TDS Temp Meter for Hydroponics PPM and EC Water Tester Digital pH PPM Meter for Nutrients Growing Hydroponics Gardening DWC hydroponics System

$29.99

$ 13 .99 $13.99

4.3

Bluelab pH 4.0 & 7.0 Calibration Solution Kit - pH Meter & pH Pen Calibration for Balanced Nutrient Solution NIST Traceable | Hydroponics, Gardening & Growing Tents (500 ml/ 16.9 Fl Oz Each)

$39.99

$ 18 .99 $18.99

4.4

Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory

$36.90

$ 17 .99 $17.99

5.0

Bluelab PENSTP pH and Conductivity Starter Pack - Precision Nutrient Solution Management Kit with Temperature Measurement, Waterproof Pens, and Probe Care Kit

$189.99

$ 78 .99 $78.99

4.4

PH Meter & TDS Meter, 5 in 1 Salinity PH Temp EC and TDS Tester, 0.01 High Accuracy Digital Display, LCD Backlit, ATC, IP67, for Swimming Pool, Drinking Water, Hydroponics and Aquarium

$16.99

$ 8 .99 $8.99

4.8

2025 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc

$6.49

$ 2 .99 $2.99

5.0

Dr.meter pH Meter, 0.01 High Accuracy Digital PH Tester with LCD Display, 0-14pH Measurement Range with Data Hold Water Quality Tester for Plants Nutrient, Pool, Hydroponic, Aquarium, Home Brewing

$25.99

$ 13 .99 $13.99

4.9

Water Tester PH Meter, Digital PH Meter 0.01 PH High Accuracy Water Quality Tester with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium Water PH Tester Design with ATC

$15.00

$ 6 .99 $6.99

4.9

TDS Meter Digital Water Tester - Accurate Water Tester for Drinking Water | 0-9990 PPM Meter - 1s Water Quality Tester - TDS Water Tester for Hydroponics, Household Drinking, and Aquarium

$12.99

$ 5 .99 $5.99

4.5

Hydrogen Water Tester, YINMIK 2025 Hydrogen Tester, Digital Hydrogen Water ppb/ppm Meter, Dissolved Hydrogen Test Pen, Accurate ORP Tester, 4 in 1 pH H2 ORP Temp Test kit for Hydrogen Water Bottle

$29.99

$ 15 .99 $15.99

4.5

Hydrogen Water Tester pH Meter 6 in 1 pH H2 ORP TDS EC Temp Tester Dissolved Hydrogen Tester for Hydrogen Water Bottle pH and ORP Meter for Household Drinking Water Hydroponics Pool

$33.99

$ 16 .99 $16.99

5.0

pH Meter, 7 in 1 pH/TDS/EC/ORP/S.G/Salinity/Temp Meter, Digital pH Tester with ATC & LCD Backlight for Drinking Water, Hydroponics, Swimming Pool and Aquarium

$32.59

$ 14 .99 $14.99

4.6

5 in 1 pH and TDS Meter, Digital pH Tester for Water, pH/TDS/EC/Salinity/Temp, PPM Meter Water Tester for Household Drinking, Pool and Aquarium, with ATC, 0.01 Resolution

$25.88

$ 11 .99 $11.99

4.4

Extech PH220-C Waterproof Palm pH Meter with Cabled Electrode

$200.92

$ 97 .99 $97.99

4.4

PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium

$6.99

$ 2 .99 $2.99

4.5

AC Infinity Hydroponic Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, All-in-One Temp Salinity EC TDS pH Meter, Water Hydroponic Gardens Aquariums Pools

$149.00

$ 73 .99 $73.99

5.0

pH Meter for Hydroponic Water,Digital EC ppm Tester for Nutrients,pH TDS Reader 4 in 1 with 1413 μs/cm Calibration Solution,High-Sensitivity Backlit Display for Drinking Water,DWC,Indoor Plants

$26.99

$ 11 .99 $11.99

4.7

2 in 1 Temperature pH Monitor Meter Tester Sensor Test Kit 0~14.0 pH Automatic Buffer Recognition BNC Electrode Probe for Hydroponics Aquarium Lab Testing Food Drinking Water pH of Saltwater/seawater

$36.99

$ 17 .99 $17.99

4.9

Bluelab Guardian Monitor Wi-Fi for Real-time pH, Temperature, and Conductivity (TDS) Measurements in Water with Calibration, 3 in 1 Digital Nutrient Meter for Hydroponic Systems and Indoor Plant Grow

$399.00

$ 99 .00 $99.00

4.5

VIVOSUN Digital pH Meter, 0.01pH High Accuracy Pen Type pH Tester for Hydroponics, Household Drinking, Pool and Aquarium, UL Certified

$7.99

$ 3 .99 $3.99

4.5

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Ph Testing